Might as well run the 35, touch more stroke
Dyno cams can grind a mean cam for one
Performance v twin makes rods, push rods, and roller rockers
They also make a billet flywheel, but you have to swap the ring gear for a steel one off a factory.
You have to do away with case gasket or it will leak within a few hours and case will crack( machine end play into it and yams bond)
Put arais flat tops with long rod and deck heads .010" or stay stock piston/ stock rod and deck .050" or shave stock piston .082" and run long rod and deck .020"
Manley makes 6mm valves for that engine.
Put a Mikuni 42 hsr and let er rip.
FYI the valve seats are bad about sinking in that engine
Or you could run it stock....... But that's no fun